Drill-holder



J. KORANEK.

' DRILL HOLDER. APPLICATION FILED MAY 5, I9I9Z 1,362,012, Patented Dec.14, 1920.

dim

1N1 sse UNITED STATES PATENT OFFICE.

JOHN KORANEK, OF CHICAGO, ILLINOIS, ASSIGNOR TO E. TOMAN AND CO CHICAGO,ILLINOIS.

MPANY, OF

DRILL-HOLDER.

Application filed May 5, 1919. Serial No. 294,829.

To all whom it may concern:

Be it known that I, JOHN KORANEK, a

citizen of the United States, and a resident.

ence being had to the accompanyin draw-,

in which forms a part of my speci cation.

My invention relates to a device for holding drill-bits in such mannerthat the desired bit or drillmay be easily and quickly selected by theoperator from the holder; the holder being adapted to hold bits ofdifferent sizes in spaced relation and with the drills preferablyarranged according to a well known or accepted gage.

The object of my invention is to provide a holder adapted to receive thepointed or cutting ends of the bits; the receiving apertures or socketsbeing preferably arranged in predetermined series and rows, so that thelocation of the drill or bit may be quickly ascertained and selectionmade; while at the same time the drills or bits will be held in suchrelation to one another and to the holder or block as to enable theholder, with the inserted drills or bits, to be easily placed in ausually comparative shallow drill-holding drawer and permit the latterto be closed. My improved holder is so constructed, that when placed onthe operating bench or table it will maintain the free or projectingends of the drills 0 bits in a series of parallel lines or rows withsuificient intervening space between the rows as well as the drills .inthe same row, as to enable a quick selection of the desired drill or bitto be made, as will be readily comprehended from the following detaileddescription of the accompanying drawing, wherein Figure 1 is a frontperspective view of my improved holder looking at one end thereof.

Fig. 2 is a rear elevation of my improved holder with a portion shown insection.

Fig. 3 is a vertical cross-sectional view of my improved holder takenthrough any series of the drill receiving sockets or apertures.

. Thdliolder in its preferred form is made of metal and in theparticular exemplification is shown of somewhat sector shape of anypredetermined length and width, in

cross-section, that is to say, the main portion of the holder isconvexo-concave, so as to provlde the arcuate surface 10 having suitableends 11. The ends are preferably of skeleton form as shown, for the sakeof hghtness and cheapness in manufacture. The two webs which form theends may be of equal length so as to maintain the arouate, forward face10thereof in proper position and at the desired inclination, as moreclearly shown 1n Fig. 3;that is to say, the web portions whichconstitute the ends of the holder, together with the varying thicknessof the forward face, constitute substant1ally equal radii for thesegment of a circle described by the forward face 10. Of course, thesedimensions may be altered when desired, and particularly if the forwardor front face 10 is to be provided with an additional series or numberof drill-rece1v1ng sockets or openings adjacent the lower front face. Iprefer the construction shown in the drawings because it enables theholder with the drills inserted therein to be easily placed in acomparatively shal low drawer, by positioning the holder so that it ismadeto rest on the upper rear edge and back portion of the webs; namelyby swinging or turning the holder upward approximately degrees from theposition shown in Fig. 3, thereby causing the drills to extend in adirection approximating the length of the drawer, so that none of thedrills will be disposed in a substantially vertical plane as is the casewhen the holder is in the set-up position shown in Fig. 3.

In the construction shown, the holder at what may be termed the upperside thereof when in proper set up position is provided with a series oflarge sockets or apertures, as shown at 12, to receive the larger orcoarser bits or drills; while the front face 10 at an intermediatepoint, preferably removed from the lower or bottom side thereof, isprovided with a series of smaller sockets or apertures 13 to receive thesmaller or finer drills or. bits. Because of this arrangement, thearcuate wall orface 10 is thickness of metal merely at points coincidentwith the sockets or apertures as shown at ll in the rear view Fig. 2;thereby leaving intermediate grooves or channels as shown at 15; theenlarged or aperture-receiving portions of the holder for lightness andcheapness in manufacture being made tapering from top to bottom, as moreclearly shown in Fig. 3.

The sockets or apertures of each horizontal row are of graduallydecreasing size from left to right; with the largest apertures arrangedat the top or upper side of the device, while the smallest are shown inthe lower horizontal row. In the particular illustration, eachhorizontal row comprises ten sockets or apertures; with the largestaperture of each horizontal row disposed at the left hand end of thedevice; and the first aperture at the left of any selected row, being ofslightly smaller gage or size than the last aperture at the right handend of the preceding horizontal row.

\Vith this arrangement, the upper horizontal row is designated bysuitable indicia, as for example numbers beginning with the numeral 1and ending with 10 at the right hand end; the second horizontal rowbeginning at the left with the number 11 and ending with the number 20;each succeeding horizontal row being indicated in a similar manner andsuccessively numbered.

The construction shown and described I believe to be the best embodimentof the invention, but it may be expressed in somewhat differentmechanical form without departing from the spirit of the invention.

\Vhat I claim is:-

1. A holder of the character described,

comprising a metallic member formed with an arcuate front wall andradially disposed ends, the front wall being provided with a series ofgraduated sockets arranged in horizontal rows extending lengthwise ofsaid wall, the wall at points coincident with the JOHN KORANEK.

Witnesses:

CYREL R. JANDUS, EDWARD LoMAN.

